Centrifugal pump



H. A. F. BORNEMAN CENTRIFUGAL PUMP Aug. 30, 1927. 1,640,591

Filed Oct, 19, 1923 Il L? fw arnman Patented Aug. 30, 1927.

UNITED STATES 1,640,591 PATENT OFFICE.

HERMAN A. F. BORNEMAN, OF COLUMBUS, OHIO, ASSIGNO-R OF ONE-HALF TO WESTGO- CHIPPEWA PUMP COMPANY, 0F DAVENPORT, IOWA, A CORPORATION OF IOWA, AND ONE-HALF TO DECATUR PUMP COMPANY, OF DECATUR, ILLINOIS, A COR- PORATION OF ILLINOIS.

CENTRIFUGAL PUMP.

AApplication led October 19, 1923. Serial No. 669,568. l

The present invention is directed to improvements in centrifugal pumps and has for itsvprimary object to provide a` device of this character so constructed that liquid will be taken in and discharged near the periphery of the casing and from both sides of the rotor. l

A further object of the invention is to provide a device vof this kind which is eX- tremely simple inconstruction, theconstruction being such that the horse power for operating is considerably reduced per gallons pumped.

A still further object of the invention is to provide a pump of this nature .which will effectively operate at astandard speed.

With these and other objects in view, as will appear as the description proceeds, the

inventionv consists in the novel features of construction, combinations of elements and arrangements of parts, and hereinafter `to be fully described and pointed out in the appended claims.

In the accompanying drawing:

Figure 1 is a'y side view with the head removed,

Figure 2 is a sectional view on line 2-2 of Figure 1, Figure 3 is a sectional'view on line 3-3 of Figure 1, and

Figure 4 is a fragmentary view of the rotor.`r Y

' Referring to the'drawing 1 designates a base which supports the casing 2, said casing being closed by a head 3, which is bolted thereto. and head are formed with annular' ribs 4 and 5 and groovesL 6 and 7, respectively, said ribs and grooves being concentrically disposed, the grooves when confronting forming a peripheral chamber 8, the purpose of which will appear later. The rib 4 is formed with a radial wall 9 which separates the inlet and outlet ports so that fluid will be prevented fr0rn wholly circulating with the rotor 10. I The casing is provided with a: hub llin which is rotatably mounted the shaft 12 which may be driven in any suitable manner, there. being a packing gland structure 13 associated with the hub to prevent fluid leakgThe rotor 10 is suitably fixed tothe inner end of the shaft l2 and is provided upon its The covering facesrof the casing.

sides with annular ribs 13 Which are adapted to intimately engage the respective ribs .4

The rim 14 of the rotor fits intimately with the inner periphery of the casing 2 so as to prevent fluid from the oppositely disposed pockets from passing from one to the other.

The casing 2 is provided with a duct 17 which communicates with ports 18-18 which open into the annular chamber 8 at a point below the wallv 9 and upon opposite sides of the rotor, there being outlet ports 19-19 in communication with the Chamber 8, said ports leading from the opposite sides of said rotor to the discharge nozzle 20, said nozzle having a pipe 21 connected thereto through which the fluid pumped vis carried to its place of use. The outlet ports 19-19 have their inner ends disposed at points above the wall 9, as clearly shown in Figure 1. y

To operate most effectively the pump is submerged in Water contained in a suitable tank, and upon rapidly rotating the shaft 12 water will be sucked into the' ports 18-18 by the pockets 16, through the chamber 8 until egress is made through the nozzle 20, and from thence the fluid is forced toits point of use. It will be obvious that as long as the rotor is rapidly rotated the vfluid will be compelled to circulate in the chamber t5` in a continuous volume and will leave through the ports 19-19 under pressure sufficient to force the water to lts point of use. l

What is claimed is: y t 1. A pump comprising a rotor having 1n one lateral face an annular groove, a plurality of blades in the groove forming a series of buckets, and a casing making a substantialiy liquid tight seal with the peripheral face of the rotor and of substantially the width of the rotor, said casing also forming a substantially liquid tight seal with the lateral surface of the rotor wherein the annular groove is formed along the radial inner side of said groove to thereby dene in conjunction with the rotor a liquid passageway of no greater diameter than the maXimum diameter of the rotor, said casing being provided with suitable inlet and outlet portions and liquid deflecting means interposed therebetween to closely fit the exposed edges of said blades to deflect liquid from the passageway to the outlet.

2. A pump comprising a rotor having in one lateral face an annular groove, a plurality of blades in the groove forming a series of buckets, and a casing making a substantially liquid tight seal with the peripheral face of the rotor, said casing also forming a'. substantially liquid tight seal with thel lateral face of the rotor wherein the aa-4 nular groove is formed, to thereby deline in conjunction with the rotor a liquid passageway of greater radial dimension than the groove formed in the rotor and of substantially the same maximum diameter as the rotor, said casing being provided with suitable inlet and outlet parts and liquid defiecting means interposed therebetween to closely fit the open face of the rotor buckets to deiectliquid romthe'passageway through said outlet part.

In testimony whereof I aiiiX my signature.

HERMAN A.. F. BORNEMAN. 

